A Repair Method for Damage in Aluminum Alloy Structures with the Cold Spray Process

Aluminum alloy structures may be damaged due to wear or corrosion while in service. These damages will bring about huge financial costs, as well as a huge amount of energy consumption. There is an urgent need to search for an appropriate repair method in order to solve this problem. In this research...

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Autores principales:	Xiaohui Han, Xiaoguang Sun, Gangqing Li, Shiming Huang, Ping Zhu, Chunyuan Shi, Tengfei Zhang
Formato:	article
Lenguaje:	EN
Publicado:	MDPI AG 2021
Materias:	cold spray process corrosion resistance mechanical properties 7N01 Technology T Electrical engineering. Electronics. Nuclear engineering TK1-9971 Engineering (General). Civil engineering (General) TA1-2040 Microscopy QH201-278.5 Descriptive and experimental mechanics QC120-168.85
Acceso en línea:	https://doaj.org/article/5ca59d249785460f93c31893be1c239b
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spelling	oai:doaj.org-article:5ca59d249785460f93c31893be1c239b2021-11-25T18:15:08ZA Repair Method for Damage in Aluminum Alloy Structures with the Cold Spray Process10.3390/ma142269571996-1944https://doaj.org/article/5ca59d249785460f93c31893be1c239b2021-11-01T00:00:00Zhttps://www.mdpi.com/1996-1944/14/22/6957https://doaj.org/toc/1996-1944Aluminum alloy structures may be damaged due to wear or corrosion while in service. These damages will bring about huge financial costs, as well as a huge amount of energy consumption. There is an urgent need to search for an appropriate repair method in order to solve this problem. In this research, the cold spray process was used to repair the damages by using a mixture of powders with Al and Al<sub>2</sub>O<sub>3</sub>. A 7N01-T4 aluminum alloy plate with a factitious pit was regarded as the damaged sample. The microstructure, mechanical properties, and corrosion behavior were studied. The results showed that there were no visible perforative pores or cracks in the repaired areas. The microhardness of the repaired areas was in the range of 57.4–63.2 HV and was lower than that of the 7N01-T4 aluminum alloy. The tensile strength of the repaired samples was markedly improved compared with the unrepaired samples. The alternate immersion test results indicated that the repaired samples had the lowest rate of mass loss compared with 7N01-T4 and the unrepaired samples. After alternate immersion tests for 504 h, the repaired samples were covered with dense corrosion products. The repaired samples had a superior corrosion resistance compared to that of 7N01-T4. Thus, the cold spray process is a method of repairing damage in aluminum alloy structures.Xiaohui HanXiaoguang SunGangqing LiShiming HuangPing ZhuChunyuan ShiTengfei ZhangMDPI AGarticlecold spray processcorrosion resistancemechanical properties7N01TechnologyTElectrical engineering. Electronics. Nuclear engineeringTK1-9971Engineering (General). Civil engineering (General)TA1-2040MicroscopyQH201-278.5Descriptive and experimental mechanicsQC120-168.85ENMaterials, Vol 14, Iss 6957, p 6957 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	cold spray process corrosion resistance mechanical properties 7N01 Technology T Electrical engineering. Electronics. Nuclear engineering TK1-9971 Engineering (General). Civil engineering (General) TA1-2040 Microscopy QH201-278.5 Descriptive and experimental mechanics QC120-168.85
spellingShingle	cold spray process corrosion resistance mechanical properties 7N01 Technology T Electrical engineering. Electronics. Nuclear engineering TK1-9971 Engineering (General). Civil engineering (General) TA1-2040 Microscopy QH201-278.5 Descriptive and experimental mechanics QC120-168.85 Xiaohui Han Xiaoguang Sun Gangqing Li Shiming Huang Ping Zhu Chunyuan Shi Tengfei Zhang A Repair Method for Damage in Aluminum Alloy Structures with the Cold Spray Process
description	Aluminum alloy structures may be damaged due to wear or corrosion while in service. These damages will bring about huge financial costs, as well as a huge amount of energy consumption. There is an urgent need to search for an appropriate repair method in order to solve this problem. In this research, the cold spray process was used to repair the damages by using a mixture of powders with Al and Al<sub>2</sub>O<sub>3</sub>. A 7N01-T4 aluminum alloy plate with a factitious pit was regarded as the damaged sample. The microstructure, mechanical properties, and corrosion behavior were studied. The results showed that there were no visible perforative pores or cracks in the repaired areas. The microhardness of the repaired areas was in the range of 57.4–63.2 HV and was lower than that of the 7N01-T4 aluminum alloy. The tensile strength of the repaired samples was markedly improved compared with the unrepaired samples. The alternate immersion test results indicated that the repaired samples had the lowest rate of mass loss compared with 7N01-T4 and the unrepaired samples. After alternate immersion tests for 504 h, the repaired samples were covered with dense corrosion products. The repaired samples had a superior corrosion resistance compared to that of 7N01-T4. Thus, the cold spray process is a method of repairing damage in aluminum alloy structures.
format	article
author	Xiaohui Han Xiaoguang Sun Gangqing Li Shiming Huang Ping Zhu Chunyuan Shi Tengfei Zhang
author_facet	Xiaohui Han Xiaoguang Sun Gangqing Li Shiming Huang Ping Zhu Chunyuan Shi Tengfei Zhang
author_sort	Xiaohui Han
title	A Repair Method for Damage in Aluminum Alloy Structures with the Cold Spray Process
title_short	A Repair Method for Damage in Aluminum Alloy Structures with the Cold Spray Process
title_full	A Repair Method for Damage in Aluminum Alloy Structures with the Cold Spray Process
title_fullStr	A Repair Method for Damage in Aluminum Alloy Structures with the Cold Spray Process
title_full_unstemmed	A Repair Method for Damage in Aluminum Alloy Structures with the Cold Spray Process
title_sort	repair method for damage in aluminum alloy structures with the cold spray process
publisher	MDPI AG
publishDate	2021
url	https://doaj.org/article/5ca59d249785460f93c31893be1c239b
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A Repair Method for Damage in Aluminum Alloy Structures with the Cold Spray Process

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